I have had a second problem with Ford on.

AUTOTECH53

MEMBER

11 POSTS

2000 FORD FOCUS

154,756 MILES

I have had a second problem with ford on charging I been I auto tech for over 30 years an never ran into these problems with charging in my live. He go, s I put a new alternator that shown at the store 14.8 volts charge and when installed in my car it charges 13.40 volts. So I took same year and model from a car that was charging 14.80 volts the alternator, battery and pcm that was working to my car and shown 13.20 to 13.40 volts also the light comes on p1246. Plus the wires that go to the pcm were cut and I installed two wires to pcm to see about wiring problem. Thank you if you all could please help ///////// I am losted.

Reconnect generator connector. Reconnect battery cables to battery. Using a DVOM, measure voltage between battery terminals. Note voltage measurement. Using a DVOM, measure voltage between negative
battery terminal and generator harness connector BATT SENSE terminal. If voltage is within .5 volt (plus or minus) of battery voltage measurement, go to next step. If voltage is not within .5 volt of battery voltage
measurement, repair BATT SENSE circuit as necessary.

4) Check Generator Failure Mode

Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). Ensure all accessories are off. Using scan tool, access GFSF PID from PID/DATA MONITOR & RECORD menu. Start
engine and raise engine speed to 2000 RPM. Note GFSF PID value. Wiggle and bend wiring harness between generator and PCM. Fault is indicated by a change in GFSF PID value. If a fault is indicated, go to
next step. If no fault is indicated, check charging system and repair as necessary. See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
There is more to this to check this system out but I just can'tcopy it all. I'm sure you have checked the fuse at rear of engine compt.

Image (Click to enlarge)

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Wednesday, November 28th, 2012 AT 6:01 PM

AUTOTECH53

MEMBER

11 POSTS

I HAVE DONE WHAT YOU HAVE LISTED. LOOKING FOR THE LAST STEP TO GO TO RUNNING OUT OF GAS. PLEASE HELP WITH NEXT STEP THANK YOU

Was this

answer

helpful?

Yes

No

Wednesday, November 28th, 2012 AT 7:09 PM

HMAC300

EXPERT

49,704 POSTS

4) Check Generator Failure Mode

Ensure all accessories are off. Using scan tool, select AFS PID from PID/DATA MONITOR & RECORD menu. Start engine. Increase engine speed to 2000 RPM. Note PID reading. Wiggle and bend wiring
harness between generator and PCM. Fault is indicated by a change in PID value. If a fault is indicated, go to next step. If no fault is indicated, check charging system and repair as necessary. I can't get what you want you'll have to either get a manual on how to check this or go on site here an drent the mitchell one for around$11 for a week sorry

Was this

answer

helpful?

Yes

No

-1

Wednesday, November 28th, 2012 AT 8:07 PM

AUTOTECH53

MEMBER

11 POSTS

THANKS FOR YOUR HELP, LIKE I SAID I HAD BEEN DOING THIS WORK FOR OVER 30 YEARS I GUEST THE CAR WILL BE THE FIRST ONE IN MY LIFE I HAVE TO SAY GOT ME I HATE TO GIVE UP. THANK YOU ALL ONCE AGAIN MAYBE SOMEONE OUT THERE WILL FIX THE PROBLEM GOD BLESS.

Is resistance greater than 10,000 ohms?
Yes No

GO to HY7 . REPAIR short circuit.

HY7 CHECK GEN MON AND GEN COM CIRCUIT FOR OPEN

? Measure resistance of the gen com circuit between the generator/regulator harness connector and the PCM harness connector.
? Measure resistance of the gen mon circuit between the generator/regulator connector and the PCM harness connector.

Is each resistance less than 5.0 ohms?
Yes

HY8 CHECK GENERATOR MONITOR SIGNAL

? Engine idling.
? Access GFS PID.

Is duty cycle between 6 98%?
Yes No

GO to HY9 . REPLACE generator/regulator assembly.

HY9 CHECK GENERATOR COMMUNICATOR SIGNAL

Does PID switch within 0 99% range?
Yes No

Generator function is OK. GO to Pinpoint Test Z , intermittent circuit failure diagnosis. REPLACE PCM (refer to Section 2, Flash Electrically Erasable Programmable Read
Only Memory (EEPROM)).
I got this out of the ford book so if you still have thecar hre is more that I couldn't get the other day for you.